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Size: S
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An update of our first full-suspension bike, the Co-op Cycles DRT 3.1 is designed to make trail riding a piece of cake—even if the trail is rough, rocky and wild as an acre of snakes.

  • Features

    • Drivetrain has been upgraded to 1 x 12-speed compared to the previous 1 x 10-speed
    • Air-sprung RockShox Recon Gold RL front suspension and RockShox Monarch R Solo Air rear both have external rebound adjust to keep the ride smooth and wheels glued to the trail
    • Size XS, S bikes have 26 x 2.8 in. wheels and 120 mm of travel front and rear; size M–XL bikes have 27.5 x 2.8 in. wheels, 140 mm of front travel and 130 mm of rear travel
    • 1 x 12-speed drivetrain with Shimano Deore rear derailleur eliminates the front derailleur to enable swift, streamlined shifting and reduce overall weight
    • Shimano Deore Shadow+ clutch-style rear derailleur decreases chain slap and makes shifts more reliable
    • Comes outfitted with a remote-control X-Fusion Manic dropper seatpost to let you adjust to terrain on the fly (XS–M frames allow 100 mm of travel; L, XL frames allow 150 mm)
    • Tektro hydraulic disc brakes deliver reliable stopping power on- or off-road and in variable weather conditions
    • Tires and rims are ready for tubeless setup
    • Front and rear thru axles provide added rigidity
    • Bicycle weight limit is 300 lbs. total, including rider plus all gear carried on the bike and on the rider's body
    • Pedals not included; specs and images are subject to change


    Free Adjustment Period:
    New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
    View all Co-op Cycles Full-Suspension Mountain Bikes
  • Technical Specs

    Best Use

    Mountain Biking

    Mountain Bike Style


    Bike Frame Material



    Co-op Cycles 6061 aluminum

    Bike Suspension

    Full Suspension


    RockShox Recon Gold RL

    Fork Travel

    S: 120 millimeters

    Rear Shock

    RockShox Monarch R Solo Air


    Shimano Deore 1X 32T

    Bottom Bracket



    Shimano Deore, 12-speed, Rapidfire Plus

    Rear Derailleur

    Shimano Deore Shadow +

    Rear Cogs

    Shimano 12-speed 10-51T

    Number of Gears

    12 gear(s)

    Brake Type

    Hydraulic Disc Brake


    Tektro Auriga hydraulic disc

    Brake Levers



    S: ST i35 TCS 2.0 26 in.

    Front Hub

    Shimano Alivio 15mm thru-axle

    Rear Hub

    Shimano Alivio 12mm thru-axle

    Wheel Size

    S: 26 inches


    S: Maxxis Recon 26 x 2.8 in.

    Tire Width

    2.8 inches

    Handlebar Shape

    Riser Bar


    Co-op double butted aluminum riser


    Co-op Cycles 6061 aluminum

    Seat Post

    X-fusion Manic dropper with remote; 100 mm/150 mm




    Not included


    Internal headset


    Shimano Super Narrow, 12-speed

    Dropper Post






  • Size Chart

    XS S M L XL
    Height Range 5'0"-5'3" 5'3" - 5'6" 5'6" - 5'9" 5'9" - 6'0" 6'0" - 6'3"
    Reach 400.0 425.0 450.0 475.0 500.0
    Stack 560.0 560.0 0.0 608.0 627.0
    Effective Top Tube 550.0 575.0 608.0 640.0 672.0
    Seat Tube Center-Top 360.0 395.0 430.0 465.0 500.0
    Standover Height 761.0 763.0 781.0 795.0 799.0
    Head Tube Angle (degrees) 66.0 66.0 67.0 67.0 67.0
    Seat Tube Angle (degrees) 75.0 75.0 75.0 75.0 75.0
    Bottom Bracket Height 19.0 19.0 25.0 25.0 25.0
    Wheelbase 1125.0 1150.0 1181.0 1214.0 1246.0
    Chainstay 433.5 433.5 441.0 441.0 441.0
    Fork Offset 46.0 46.0 46.0

    Sizing Notes

    Measurements are stated in millimeters unless otherwise indicated.

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